Denial of service in LiteSpeed QUIC
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2022-30592 |
| CWE-ID | CWE-476 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
LiteSpeed QUIC Server applications / IDS/IPS systems, Firewalls and proxy servers |
| Vendor | LiteSpeed Technologies |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) NULL pointer dereference
EUVDB-ID: #VU66731
Risk: Medium
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2022-30592
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within liblsquic/lsquic_qenc_hdl.c when handling HTTP/3 requests. A remote attacker can send multiple requests to the server and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsLiteSpeed QUIC: 1.0 - 3.0.4
External linkshttp://github.com/litespeedtech/lsquic/commit/a74702c630e108125e71898398737baec8f02238#diff-73a138506faffe5f1efa8586346ab573c88e9dd2097774ecca5949a718a57cae
http://github.com/litespeedtech/lsquic/releases/tag/v3.1.0
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
